body {
    background: url("bg.jpg") no-repeat center fixed;
    background-size: cover;
}

.set {
    right: 0;
    bottom: 0;
    position: absolute;
    width: 64px;
    height: 132px;
    /*原图标来自 iconfont@南瑄*/
    padding: 0;
    border-style: none;
    background: none;
}

.set:hover {
    background: url("imgs/set.svg") no-repeat top;
    background-color: white;
}

.blurr {
    backdrop-filter: blur(8px);
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: 32px;
    position: absolute;
    padding: 16px;
}

video{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -999;
}